BAEKJOON - 11021 : A + B - 7

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;


public class Main
{
	public static void main(String[] args) throws IOException
	{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		
		int a, b;
		
		int testCaseCount = Integer.parseInt(br.readLine());
		
		for(int i = 0; i < testCaseCount; i++)
		{
			StringTokenizer st = new StringTokenizer(br.readLine());
			
			a = Integer.parseInt(st.nextToken());
			b = Integer.parseInt(st.nextToken());
			
			bw.write("Case #" + (i+1) + ": " + (a + b) + "\n");
		}
		
		br.close();
		bw.flush();
		bw.close();

		
	}

}

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